Or. Rev. Stat. § 634.148
If an individual holding a license, certificate or other authorization issued under this chapter commits or has responsibility for a violation of this chapter related to the spraying or other application of a pesticide, or for a violation of a State Department of Agriculture rule related to those applications, and the department in its discretion deems that the violation indicates an inadequate knowledge of the laws and rules applicable to pesticides, in addition to any other available penalty or sanction:
[2015 c.833 §19]